@article{MZM_2018_104_2_a1,
     author = {A. S. Volostnov},
     title = {On {Double} {Sums} with {Multiplicative} {Characters}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {174--182},
     publisher = {mathdoc},
     volume = {104},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2018_104_2_a1/}
}